Exposure to ________,breathing in tobacco or cigar smoke from another person's smoking,also seems to be a risk factor for cardiovascular disease.Risk appears to be proportional to the amount of daily exposure.

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The Answer of Exposure to ________,breathing in tobacco or cigar smoke from another person's smoking,also seems to be a risk factor for cardiovascular disease.Risk appears to be proportional to the amount of daily exposure.

Exposure to ________,Breathing in Tobacco or Cigar Smoke from Another